1 solution

Solution 1

I think you'll need to build that control yourself. It's not that hard... I would add a datagridview control to your form and hide it. Then, I would add a text box where I wanted the combobox to be, and a small button next to it to serve as the drop down button. When someone clicks on the dropdown button, move your data grid view under the textbox, size it to the length of the textbox, and make it visible. If someone clicks anything else on the form, set the datagridview visible = false.